Which bot are you importing the file into?
The file looks correct, as long as you import it as an AIML file, ensure you are importing it as AIML not response list, chat log , or Self.
Also, you have enabled learning for your bot, and have corrupted their response. Learning should be disabled, otherwise your bot will learn every response as a new response. You will need to reset your bot, create a new bot, or clean up its response from its Training & Chat Logs page.